package org.swqsbssddqs.shortlink.project;


public class test {
    static String sql = "DROP TABLE `t_link_%d`;\n";





public class ListNode {
    int val;
    ListNode next;
    ListNode() {}
    ListNode(int val) { this.val = val; }
    ListNode(int val, ListNode next) { this.val = val; this.next = next; }
 }



public class TreeNode {
    int val;
    TreeNode left;
     TreeNode right;
     TreeNode() {}
    TreeNode(int val) { this.val = val; }
    TreeNode(int val, TreeNode left, TreeNode right) {
         this.val = val;
       this.left = left;
        this.right = right;
     }
 }
    public static void main(String[] args) {
        int[] a = {2,7,9,3,1};

    }
}




